What is the membership value for a trapezoidal membership function with parameters a=0, b=2, c=6, and d=8 when x=6? 1.0 0.5 0.0 None of the above

The membership value for a trapezoidal membership function with parameters a=0, b=2, c=6, and d=8 when x=6 is 1.0.

Here's why:

The trapezoidal membership function is defined as follows:

• If x <= a or x >= d, then the membership value is 0.
• If a <= x <= b, then the membership value is (x - a) / (b - a).
• If b <= x <= c, then the membership value is 1.
• If c <= x <= d, then the membership value is (d - x) / (d - c).

Given the parameters a=0, b=2, c=6, and d=8 and the value x=6, we can see that x falls in the range of b <= x <= c. Therefore, according to the definition of the trapezoidal membership function, the membership value is 1.